#include<stdio.h>
#include<unistd.h>
#include<string.h>

int main()
{
    const char* s1 = "hello write\n";
    write(1, s1, strlen(s1));

    const char* s2 = "hello fprintf\n";
    fprintf(stdout, "%s", s2);

    const char* s3 = "hello fwrite\n";
    fwrite(s3, strlen(s3), 1, stdout);

    fork();

    return 0;
}
